package com.xuecheng.content.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.xuecheng.base.exception.XueChengPlusException;
import com.xuecheng.base.model.PageParams;
import com.xuecheng.base.model.PageResult;
import com.xuecheng.content.mapper.CourseBaseMapper;
import com.xuecheng.content.mapper.CourseCategoryMapper;
import com.xuecheng.content.mapper.CourseMarketMapper;
import com.xuecheng.content.model.dto.AddCourseDto;
import com.xuecheng.content.model.dto.CourseBaseInfoDto;
import com.xuecheng.content.model.dto.EditCourseDto;
import com.xuecheng.content.model.dto.QueryCourseParamsDto;
import com.xuecheng.content.model.po.CourseBase;
import com.xuecheng.content.model.po.CourseCategory;
import com.xuecheng.content.model.po.CourseMarket;
import com.xuecheng.content.service.CourseBaseInfoService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;


@Slf4j
@Service
public class CourseBaseInfoServiceImpl  implements CourseBaseInfoService {


 @Autowired
 CourseBaseMapper courseBaseMapper;
 @Autowired
 CourseMarketMapper courseMarketMapper;
 @Autowired
 CourseCategoryMapper courseCategoryMapper;

 @Override
 public PageResult<CourseBase> queryCourseBaseList(Long companyId,PageParams pageParams, QueryCourseParamsDto queryCourseParamsDto) {


  //构建查询条件对象
  LambdaQueryWrapper<CourseBase> queryWrapper = new LambdaQueryWrapper<>();
  //构建查询条件，根据课程名称查询
     queryWrapper.like(StringUtils.isNotEmpty(queryCourseParamsDto.getCourseName()),CourseBase::getName,queryCourseParamsDto.getCourseName());
  //构建查询条件，根据课程审核状态查询
     queryWrapper.eq(StringUtils.isNotEmpty(queryCourseParamsDto.getAuditStatus()),CourseBase::getAuditStatus,queryCourseParamsDto.getAuditStatus());
//构建查询条件，根据课程发布状态查询
//todo:根据课程发布状态查询
  queryWrapper.eq(StringUtils.isNotEmpty(queryCourseParamsDto.getPublishStatus()),CourseBase::getStatus,queryCourseParamsDto.getPublishStatus());
  queryWrapper.eq(CourseBase::getCompanyId,companyId);
  //分页对象
  Page<CourseBase> page = new Page<>(pageParams.getPageNo(), pageParams.getPageSize());
  // 查询数据内容获得结果
  Page<CourseBase> pageResult = courseBaseMapper.selectPage(page, queryWrapper);
  // 获取数据列表
  List<CourseBase> list = pageResult.getRecords();
  // 获取数据总数
  long total = pageResult.getTotal();
  log.info("数据总数wei：{}", total);
  // 构建结果集
  PageResult<CourseBase> courseBasePageResult = new PageResult<>(list, total, pageParams.getPageNo(), pageParams.getPageSize());
  return courseBasePageResult;
 }
 @Transactional
@Override
 public CourseBaseInfoDto createCourseBase(Long companyId, AddCourseDto dto) {

  //新增对象
  CourseBase courseBaseNew = new CourseBase();
  //将填写的课程信息赋值给新增对象
  BeanUtils.copyProperties(dto,courseBaseNew);
  //设置审核状态
  courseBaseNew.setAuditStatus("202002");
  //设置发布状态
  courseBaseNew.setStatus("203001");
  //机构id
  courseBaseNew.setCompanyId(companyId);
  //添加时间
  courseBaseNew.setCreateDate(LocalDateTime.now());
  //插入课程基本信息表
  int insert = courseBaseMapper.insert(courseBaseNew);
  if(insert<=0){
   throw new RuntimeException("新增课程基本信息失败");
  }
  //向课程营销表保存课程营销信息
  //课程营销信息
  CourseMarket courseMarketNew = new CourseMarket();
  Long courseId = courseBaseNew.getId();
  BeanUtils.copyProperties(dto,courseMarketNew);
  courseMarketNew.setId(courseId);
  int i = saveCourseMarket(courseMarketNew);
  if(i<=0){
   throw new RuntimeException("保存课程营销信息失败");
  }
  //查询课程基本信息及营销信息并返回
  return getCourseBaseInfo(courseId);

 }
 @Override
 public CourseBaseInfoDto updateCourseBase(Long companyId, EditCourseDto editCourseDto) {

  //拿到课程id
  Long courseId = editCourseDto.getId();
  //查询课程信息
  CourseBase courseBase = courseBaseMapper.selectById(courseId);
  if(courseBase == null){
   XueChengPlusException.cast("课程不存在");
  }

  //数据合法性校验
  //根据具体的业务逻辑去校验
  //本机构只能修改本机构的课程
  if(!companyId.equals(courseBase.getCompanyId())){
   XueChengPlusException.cast("本机构只能修改本机构的课程");
  }

  //封装数据
  BeanUtils.copyProperties(editCourseDto,courseBase);
  //修改时间
  courseBase.setChangeDate(LocalDateTime.now());

  //更新数据库
  int i = courseBaseMapper.updateById(courseBase);
  if(i<=0){
   XueChengPlusException.cast("修改课程失败");
  }
  //更新营销信息
  CourseMarket courseMarket = new CourseMarket();
  BeanUtils.copyProperties(editCourseDto,courseMarket);

  saveCourseMarket(courseMarket);
  //查询课程信息
  CourseBaseInfoDto courseBaseInfo = getCourseBaseInfo(courseId);

  return courseBaseInfo;
 }

 //单独写一个方法保存营销信息，逻辑：存在则更新，不存在则添加
 private int saveCourseMarket(CourseMarket courseMarketNew){

  //参数的合法性校验
  String charge = courseMarketNew.getCharge();
  if(StringUtils.isEmpty(charge)){
   throw new RuntimeException("收费规则为空");
  }
  //如果课程收费，价格没有填写也需要抛出异常
  if(charge.equals("201001")){
   if(courseMarketNew.getPrice() ==null || courseMarketNew.getPrice().floatValue()<=0){
//               throw new RuntimeException("课程的价格不能为空并且必须大于0");
    XueChengPlusException.cast("课程的价格不能为空并且必须大于0");
   }
  }

  //从数据库查询营销信息,存在则更新，不存在则添加
  Long id = courseMarketNew.getId();//主键
  CourseMarket courseMarket = courseMarketMapper.selectById(id);
  if(courseMarket == null){
   //插入数据库
   int insert = courseMarketMapper.insert(courseMarketNew);
   return insert;
  }else{
   //将courseMarketNew拷贝到courseMarket
   BeanUtils.copyProperties(courseMarketNew,courseMarket);
   courseMarket.setId(courseMarketNew.getId());
   //更新
   int i = courseMarketMapper.updateById(courseMarket);
   return i;
  }



 }
 //根据课程id查询课程基本信息，包括基本信息和营销信息
 public CourseBaseInfoDto                                                                                                                           getCourseBaseInfo(Long courseId){

  CourseBase courseBase = courseBaseMapper.selectById(courseId);
  if(courseBase == null){
   return null;
  }
  CourseMarket courseMarket = courseMarketMapper.selectById(courseId);
  CourseBaseInfoDto courseBaseInfoDto = new CourseBaseInfoDto();
  BeanUtils.copyProperties(courseBase,courseBaseInfoDto);
  if(courseMarket != null){
   BeanUtils.copyProperties(courseMarket,courseBaseInfoDto);
  }
  //查询分类名称
  CourseCategory courseCategoryBySt = courseCategoryMapper.selectById(courseBase.getSt());
  courseBaseInfoDto.setStName(courseCategoryBySt.getName());
  CourseCategory courseCategoryByMt = courseCategoryMapper.selectById(courseBase.getMt());
  courseBaseInfoDto.setMtName(courseCategoryByMt.getName());
  return courseBaseInfoDto;
 }

}